Hi monks,

I have the code below to check if an image file exists: 
my $dir = "F:/images";
my $image = 'swim.jpg';
#my $image = '';
#my $image = undef;
my $file = "$dir/$image";

if (-e $file) {
    # printed even if $image is '' or undef
    print "Yes image exists\n";
}
else {
    print "No image doesn't exist\n";
}

[download]
How is -e $file true when $image is the empty string '' or even undef? How do I check if a file really exists i.e. true only if the file is in the directory? I could do the following but I'm not sure it's the right way: 
if ($image and -e $file) {
    # printed even if $image is '' or undef
    print "Yes image exists\n";
}
else {
    print "No image doesn't exist\n";
}

[download]

In reply to Check if file exists by Anonymous Monk

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